Marshall Amplification DSL 40C User manual

Owner’s Manual
DSL
40C
40 Watt Combo
DSL
100H
100 Watt Head
Dual Super Lead, All-Valve Amps with Reverb

2 1
ENGLISH
Overview
The mindset behind the DSL100H is a simple one and
obviously identical to that of the original JCM2000 DSL100
head – combine the world-renowned EL34 driven power-
stage of the 1959 Super Lead Plexi (SLP) 100W head with
a dual channel valve preamp, giving you two footswitchable
Super Leads in one. Then, for good measure, add a built-in,
studio-quality, digital spring Reverb plus extra preamp gain
that can take you into JCM800 2203 territory and far beyond
it. Hence the name DSL – Dual Super Lead. The DSL40C is
the same exact beast except in a 40-Watt, 1x12" combo form,
housing a custom-voiced Celestion speaker.
Both amps feature two footswitchable channels (footswitch
supplied) named Classic Gain and Ultra Gain – each with
two modes, selectable via a front-panel button. As their
names imply, each channel has a very different character.
Classic Gain takes you from a 1959 style clean to the snarl
of a JCM800 2203, and everything in-between, via its Clean/
Crunch mode button. Ultra Gain, on the other hand, takes you
from a hot-rodded 2203 vibe to an even higher gain response
with additional mid-boost, via its Lead 1/Lead 2, mode switch.
Both channels share a passive three-band EQ with controls
for Bass, Middle and Treble. The Equalisation section also
features a Tone Shift button which, when activated
(pushed in), shifts out the mid frequencies making the
amp ideal for brutal, modern metal tones, especially when
combined with high gain settings. Each channel also has
its own individual Reverb level control for the built-in studio
quality digital spring reverb, This effect can be switched on/off
via the supplied footswitch.
Both amps’ power section features controls for Resonance
and Presence. Resonance adds a variable bass boost to
your sound without muddying it up, while the Presence adds
high end. The ability to select either full output power or
half-power via the Pentode/Triode switch on the rear panel,
adds further to your DSL’s already impressive feature set. The
all-round tonal and gain versatility makes both the DSL100H
& DSL40C superb and flexible performance tools for today’s
most demanding playing situations and you can rest assured
it is packed full of our famed Marshall tone.
The ability to select either full output power or half-power via
the Pentode/Triode switch on the rear panel, adds further to
your DSL’s already impressive feature set.
Enjoy your DSL amp and please read this handbook carefully
before plugging in.
Follow all instructions and heed all warnings
KEEP THESE INSTRUCTIONS
Warning:
Before going any further, make sure that your amplifier is compatible with your electrical supply. If you have any doubt, please seek help
from a qualified technician – your Marshall dealer can help you in this respect.
Mains Input & Fuse:
Your amplifier is provided with either a detachable mains (power) lead which should be connected to the mains input socket on the rear
panel of the amplifier or a fixed mains (power) lead attached to the rear of the amplifier.
The specific mains input voltage rating that your amplifier has been manufactured for is indicated on the rear panel of the amplifier.
The correct value and type of mains fuse for valve amplifiers is specified on the rear panel of the amplifier.
NEVER attempt to bypass the fuse or fit one of the incorrect value or type.
Transporting your equipment:
Please ensure that your amplifier is switched off and unplugged from the mains electricity supply and that all removable cables have been
disconnected from your equipment before attempting to move it.
Important set up information:
1. Make sure that the cabinet(s)/speakers, where appropriate, are connected to the correct impedance LOUDSPEAKER jack(s) on the
rear panel of the amplifier. See the Speaker Output guides in this handbook, if applicable, for specific information regarding impedance
matching. When using an extension cabinet make sure that you are using a proper speaker cable. Never use a screened (shielded) guitar
cable for this purpose.
WARNING! Failure to do any of the above may damage your amplifier.
2. Ensure that the VOLUME controls on the front panel are set to zero.
3. For amplifiers provided with a detachable mains (power) lead, connect the supplied mains (power) lead into the MAINS INPUT on the rear
panel first and then into an electrical outlet.
4. Plug your guitar into the INPUT jack socket on the front panel.
5. Turn the front panel POWER switch on and, if a valve amplifier, wait a couple of minutes before going to point 6, other wise go to point 7.
6. After waiting engage the STANDBY switch (see Front Panel Features for full explanation).
7. Turn the volumes up to your preferred level and your amp is ready to play.
EUROPE ONLY – Note: This equipment has been tested and found to comply with the requirements of the EMC Directive
(Environments E1, E2, and E3 EN 55103-1/2) and the Low Voltage Directive in the E.U.
EUROPE ONLY – Note: The Peak Inrush current for the DSL100H is 44A and the DSL40C is 27A.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or more of the following measures:
— Reorient or relocate the receiving antenna.
— Increase the separation between the equipment and receiver.
— Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
— Consult the dealer or an experienced radio/TV technician for help.
From JIM MARSHALL
I would like to personally thank and congratulate you for selecting
one of our Dual Super Lead, all-valve DSL100H heads or DSL40C
combos.
Since I started Marshall Amplification in 1962 I have witnessed
some incredible breakthroughs and advances in amplifier design
technology. These include, switchable channels, Master Volume,
Reverb, MIDI technology, speaker emulation and digital effects
processing, to name just a few. These may seem like every day
features nowadays but this certainly wasn’t always the case.
However, the same values that were present in the first Marshalls
are still here today, that is, solid workmanship, reliability, iconic looks
and above all great Marshall tone.
As you may know, when the JCM2000 Dual Super Lead series of
amps was first introduced in 1997, we were delighted to see them
get a fantastic reaction from guitar players and also the press. In
fact one of the biggest American guitar magazines described the
DSL100 as “The best Marshall ever? It combines the best tonal
qualities and features of both modern and vintage Marshall amps
in one package.” Better still, when the world renowned magazine,
Guitar Player, reviewed the DSL100 it printed
“The Ultimate Marshall?” as a subheading on their June 1997
cover.
After a very successful life, the JCM2000 series was replaced by
the JVM series in 2007, which has also gone onto great success
and critical acclaim. That said, there is still a great deal of respect
and demand for the DSL’s with one of the UK’s most popular guitar
magazines recently referring to the DSL100 as “the go-to rock
amp.”
As a result of public demand, I have decided to introduce four
affordable amplifiers based on the popular DSL100, two of which
are featured in this manual: a 100-Watt head – the DSL100H, and
a 40-Watt combo – the DSL40C. In addition to their new names,
these EL34 powered beauties both boast the same exact front panel
features and functions. They also include a variable Resonance
control (as opposed to the fixed off or on Deep switch on the
original) and a fresh, modern look, while remaining true to the great
tones that made the original DSL100 such a popular amp.
I would like to wish you every success with all of your musical
endeavours and also your DSL amp, which I know will provide you
with great tones and playing pleasure for many years to come.
Welcome to the Marshall family!
Yours Sincerely,
Jim Marshall

23
ENGLISH
DSL40C Front Panel Controls & Switches (from Left to Right)
DSL40C Rear Panel Features (from Left to Right)
2345
168 & 9
STANDBY
OFF
ON
POWER
OFF
ON
6
4
2
010
8
ULTRA
6
4
2
010
8
CLASSIC
6
4
2
010
8
RESONANCE
6
4
2
010
8
PRESENCE
6
4
2
010
8
BASS
6
4
2
010
8
MIDDLE
6
4
2
010
8
TREBLE
6
4
2
010
8
VOLUME
6
4
2
010
8
GAIN
6
4
2
010
8
VOLUME
6
4
2
010
8
GAIN
INPUT
Clean
Crunch
Channel
Select
Lead 1
Lead 2
Tone
Shift
CLASSIC GAIN ULTRA GAIN EQUALISATION REVERB
OF
F
O
N
OFF
O
N
6
4
2
01
0
8
6
4
2
0
1
0
8
6
4
2
0
1
0
8
6
4
2
0
1
0
8
6
4
2
0
10
8
6
4
2
0
1
0
8
6
4
2
0
10
8
6
4
2
0
1
0
8
1
2
6
4
2
0
1
0
8
L
L
6
4
2
0
1
0
8
n
h
6
4
2
0
10
8
C
C
DSL
40C
124
35 6 7 8 9 10 11 12 13 14 16 1715 18 19 20
1. INPUT
Input jack socket for guitar cable.
CLASSIC GAIN CHANNEL ––––––––––––––––––––––––
2. CLASSIC GAIN CHANNEL CONTROL
Controls the Gain level for the Classic Gain channel.
As the amount of gain increases, so will the
distortion level in your sound.
3. CLEAN/CRUNCH MODE SELECT BUTTON
The Classic Gain channel features two modes – Clean
and Crunch. With the button pressed in, the Clean
mode is reminiscent of an early 1959 Plexi Super Lead
head and, depending on the Gain setting (2) will take
you from clean to a Plexi style crunch. With the button
pressed out, the Crunch mode gives you a JCM800
2203 style grind.
4. CLASSIC GAIN CHANNEL VOLUME CONTROL
Controls the volume level for the Classic Gain
channel.
5. CLASSIC GAIN CHANNEL LED
This LED lights-up green to indicate that the Classic
Gain channel has been selected.
6. CHANNEL GAIN SELECTION BUTTON
Selects Ultra Gain channel when pushed in, and the
Classic Gain channel when out.
ULTRA GAIN CHANNEL ––––––––––––––––––––––––––
7. ULTRA GAIN CHANNEL LED
This LED lights-up red to indicate that the Ultra Gain
channel has been selected.
8. ULTRA GAIN CHANNEL CONTROL
Controls the Gain level for the Ultra Gain channel. As
the amount of gain increases, so will the distortion
level in your sound.
9. LEAD 1/LEAD 2 BUTTON
The Ultra Gain channel features two selectable
modes – Lead 1 & Lead 2. Lead 1 (button out) gives
an open, high-gain crunch, with traditional Marshall
characteristics, similar to a hot-rodded JCM 800
2203. Lead 2 (button in) produces a mid-boosted
tone with even higher gain possibilities.
10. ULTRA GAIN CHANNEL VOLUME CONTROL
Controls the volume level for the Ultra Gain channel.
EQUALISATION SECTION –––––––––––––––––––––––––
11. TREBLE CONTROL
Controls the high frequencies of the guitar tone,
making your guitar sound brighter when it is turned
clockwise.
12. MIDDLE CONTROL
This controls the middle register of your guitar’s
sound. Turning this up will make your guitar
sound fatter, while turning it down will result in a
sharper, “scooped” tone – especially when used in
conjunction with the Tone Shift button.
13. BASS CONTROL
Controls the amount of bottom end (low frequencies)
in your tone.
14.TONE SHIFT BUTTON
The Tone Shift reconfigures the tone network adding
a new dimension to passive tone shaping. When the
button is pushed in and the Middle control (12) is
turned down, the result is an aggressive, scooped-
mid sound, ideal for many modern metal styles.
15. PRESENCE CONTROL
Turning this control clockwise adds higher
frequencies to your guitar tone, creating crispness
and bite and making the sound more cutting and “in
your face.” This control works within the powerstage.
16. RESONANCE CONTROL
Turning this control clockwise adds a resonant
bass boost to your sound, increasing bottom end
thud whilst making your tone fatter around that all-
important low end. This control also works within the
powerstage.
REVERB SECTION –––––––––––––––––––––––––––––––
17. CLASSIC GAIN CHANNEL REVERB CONTROL
Controls the Reverb level on the Classic Gain channel.
18. ULTRA CHANNEL REVERB CONTROL
Controls the Reverb level on the Ultra Gain channel.
POWER SECTION –––––––––––––––––––––––––––––––––
19. STANDBY SWITCH
Controls H.T. or high voltage to the valves, allowing
them to attain correct working temperature before
playing.
NOTE 1:To prolong the life of the valves it is always
advisable to switch on the Mains Power Switch (20)
about 2 minutes before switching on the Standby (19).
NOTE 2: On powering your amp down, the Standby
should always be switched off before the Power Switch
is.
NOTE 3:The standby facility is particularly useful before
playing, when changing guitars and between sets as it
allows you to keep the valves operating at a functional
temperature without any sound being produced.
20. POWER SWITCH
On/Off switch for mains power to the amplifier.
1. MAINS INPUT SOCKET WITH MAINS FUSE
Your amp is provided with a detachable mains
(power) lead, which is connected here. The specific
mains input voltage rating that your amplifier has
been manufactured for is indicated on the rear
panel. Before connecting for the first time, please
ensure that your amplifier is compatible with your
electricity supply. If you have any doubt, please
seek advice from a qualified technician. Your
Marshall dealer will help you in this respect.
OUTPUT POWER SELECTION –––––––––––––––––––––
2. PENTODE/TRIODE SWITCH
When Pentode (full power) is selected the amp’s
output capability is the full 40-Watts. When Triode
mode (half power) is selected, the amp’s output is
halved to 20-Watts. Triode mode also produces a
smoother, less aggressive sound.
IMPORTANT OPERATIONAL NOTE: Whenever this
switch is used the amp must always be in Standby
mode.
FX LOOP ––––––––––––––––––––––––––––––––––––––––
3. FX LOOP SEND
For connection to the input of an external effects
pedal or processor.
4. FX LOOP RETURN
For connection from the output of an external
effects pedal or processor.
5. FX LOOP SWITCH
This switches the DSL40C’s Series FX loop on
or off.
FOOTSWITCH ––––––––––––––––––––––––––––––––––––
6. FOOTSWITCH JACK
For the connection of the supplied 2 button footswitch
(PEDL-00009). This allows you to switch between
the Classic Gain and Ultra Gain channels (Note:
The footswitch overrides the front panel Channel
switch) and also switches the Reverb on/off.
LOUDSPEAKER OUTPUTS ––––––––––––––––––––––––
IMPORTANT OPERATIONAL NOTE: With all-valve
amplifiers it is imperative that the amp is connected
to a load whilst in operation and that the impedance
output(s) on the amp matches the total impedance
of the speaker cabinet(s) being used.
Failure to comply with these points will result in
damage to the amplifier.
The DSL40C features three outputs, a dedicated
16Ωoutput and two 8Ωoutputs.
The DSL40C must not be run into an impedance
less than 8Ω.
7. 16Ω SPEAKER OUTPUT
For the connection of a 16Ωspeaker cabinet. It
should be noted that when this Speaker Output is in
use the remaining Speaker Outputs (8 & 9) are not
operational.
8. & 9. 8ΩSPEAKER OUTPUTS
For use when the total impedance of the speaker
cabinet(s) being used is 8Ω. That is, when using
either 1 x 8Ωcab or 2 x 16Ωcabs.
7
Technical Specification
DSL40C
Power (RMS) 40W
Valves 4 x ECC83
2 x EL34
Channels 2
Speaker 1 x 12"
Weight (kg) 22.85
Dimensions (mm)
W 621
H 490
D 252

4 5
ENGLISH
DSL100H Front Panel Controls & Switches (from Left to Right)
DSL100H Rear Panel Features (from Left to Right)
DSL100H Front Panel 680mm x 67.7mm Issue 6 21_9_2011
6
4
2
010
8
6
4
2
010
8
6
4
2
010
8
6
4
2
010
8
6
4
2
010
8
6
4
2
010
8
6
4
2
010
8
6
4
2
010
8
6
4
2
010
8
6
4
2
010
8
6
4
2
010
8
ON
POWER
OFF
ON
STANDBY
OFF
ULTRA RESONANCE PRESENCE BASS MIDDLE TREBLE VOLUME GAIN VOLUME GAIN INPUT
Clean
Crunch
Channel
Select
Lead 1
Lead 2
Tone
Shift
CLASSIC
REVERB CLASSIC GAIN
EQUALISATION ULTRA GAIN
6
4
2
0
10
8
CL
AS
SI
C
6
4
2
0
10
8
UL
TR
A
6
4
2
0
10
8
RE
SO
NA
NC
E
6
4
2
0
1
0
8
PR
ES
EN
CE
6
4
2
0
10
8
BA
SS
6
4
2
0
10
8
MI
DD
LE
6
4
2
0
1
0
8
TR
EB
LE
6
4
2
0
10
8
VO
LU
ME
L
L
6
4
2
0
10
8
GA
IN
1
2
6
4
2
0
10
8
VO
LU
ME
C
C
6
4
2
0
10
8
GA
IN
n
h
INPU
T
O
N
POWER
OF
F
O
N
STANDBY
OF
F
DSL
100H
12 3 4 5 6 7 8 9 10 11 12 13 15 1614 17 18 19 20
POWER SECTION –––––––––––––––––––––––––––––––––
1. POWER SWITCH
On/Off switch for mains power to the amplifier.
2. STANDBY SWITCH
Controls H.T. or high voltage to the valves, allowing
them to attain correct working temperature before
playing.
NOTE 1: To prolong the life of the valves it is always
advisable to switch on the Mains Power Switch (1)
about 2 minutes before switching on the Standby (2).
NOTE 2: On powering your amp down, the Standby
should always be switched off before the Power
Switch is.
NOTE 3: The standby facility is particularly useful
before playing, when changing guitars and between
sets as it allows you to keep the valves operating at
a functional temperature without any sound being
produced.
REVERB SECTION ––––––––––––––––––––––––––––––––
3. ULTRA GAIN CHANNEL REVERB CONTROL
Controls the Reverb level on the Ultra Gain channel.
4. CLASSIC GAIN CHANNEL REVERB CONTROL
Controls the Reverb level on the Classic Gain
channel.
EQUALISATION SECTION ––––––––––––––––––––––––––
5. RESONANCE CONTROL
Turning this control clockwise adds a resonant
bass boost to your sound, increasing bottom end
thud whilst making your tone fatter around that
all-important low end. This is a function of the
powerstage.
6. PRESENCE CONTROL
Turning this control clockwise adds higher
frequencies to your guitar tone, creating crispness
and bite and making the sound more cutting and in
your face. This is also a function of the powerstage.
7.TONE SHIFT BUTTON
The Tone Shift reconfigures the tone network to give
a new dimension to passive tone shaping. When
the button is pushed in, and the Middle control (9) is
turned down, the result is an aggressive, scooped-
mid sound, ideal for many modern metal styles.
8. BASS CONTROL
Controls the amount of bottom end (low frequencies)
in your tone.
9. MIDDLE CONTROL
This dictates the middle register of your guitar’s
sound. Turning this up will make your guitar sound
fatter, while turning it down will result in a sharper,
“scooped” tone – especially when used in conjunction
with the Tone Shift button.
10.TREBLE CONTROL
Controls the high frequencies of the guitar tone,
making your guitar sound brighter when it is turned
clockwise.
ULTRA GAIN CHANNEL –––––––––––––––––––––––––––
11. ULTRA GAIN CHANNEL VOLUME CONTROL
Controls the volume level for the Ultra Gain channel.
12. LEAD 1/LEAD 2 BUTTON
The Ultra channel features two selectable modes –
Lead 1 & Lead 2. Lead 1 (button out) gives an
open, high-gain crunch, with traditional Marshall
characteristics, similar to a hot-rodded JCM800 2203.
Lead 2 (button in) produces a mid-boosted tone with
even higher gain possibilities.
13. ULTRA GAIN CHANNEL GAIN CONTROL
Controls the Gain level for the Ultra Gain channel. As
the amount of gain increases, so will the distortion
level in your sound.
14. ULTRA GAIN CHANNEL LED
This LED lights-up red to indicate that the Ultra Gain
channel has been selected.
15. CHANNEL SELECTION BUTTON
Selects Ultra Gain channel when pushed in, and the
Classic Gain channel when out.
CLASSIC GAIN CHANNEL –––––––––––––––––––––––––
16. CLASSIC GAIN CHANNEL LED
This LED lights-up green to indicate that the Classic
Gain channel has been selected.
17. CLASSIC GAIN CHANNEL VOLUME CONTROL
Controls the volume level for the Classic Gain
channel.
18. CLEAN/CRUNCH BUTTON
Just like the Ultra Gain channel, the Classic Gain
channel features two modes – Clean and Crunch.
The Clean mode is reminiscent of an early 1959 Plexi
Super Lead head and, depending on the Gain setting
(19) will take you from clean to a Plexi style crunch.
The Crunch mode gives you a JCM800 2203 style
grind.
19. CLASSIC GAIN CHANNEL GAIN CONTROL
Controls the gain level for the Classic Gain channel.
As the amount of gain increases, so will the distortion
level in your sound.
20. INPUT
Input jack socket for guitar cable.
LOUDSPEAKER OUTPUTS ––––––––––––––––––––––––
IMPORTANT OPERATIONAL NOTE: With all-valve
amplifiers it is imperative that the amp is connected
to a load whilst in operation and that the impedance
output(s) on the amp matches the total impedance of
the speaker cabinet(s) being used. Failure to comply
with these points will result in damage to the amplifier.
The DSL100H features three outputs, a dedicated
16Ωoutput and two 8Ωoutputs.
The DSL100H must not be run into an impedance
less than 8Ω.
1. & 2. 8ΩSPEAKER OUTPUTS
For use when the total impedance of the speaker
cabinet(s) being used is 8Ω. That is, when using
either single 8Ωcab or two 16Ωcabs.
3. 16ΩSPEAKER OUTPUT
For the connection of a 16Ωspeaker cabinet. It
should be noted that when this Speaker Output is in
use the remaining Speaker Outputs, items 1 and 2,
are not operational.
FOOTSWITCH –––––––––––––––––––––––––––––––––––––
4. FOOTSWITCH JACK
For the connection of the supplied 2 button footswitch
(PEDL-00009). This allows you to switch between
the Classic Gain and Ultra Gain channels and also
switches the Reverb on/off.
NOTE: The footswitch overrides the front panel
Channel switch.
FX LOOP –––––––––––––––––––––––––––––––––––––––––
5. FX LOOP SWITCH
This switches the DSL100H’s Series FX loop on or
off.
6. FX LOOP RETURN
For connection from the output of an external effects
pedal or processor.
7. FX LOOP SEND
For connection to the input of an external effects
pedal or processor.
OUTPUT POWER SELECTION ––––––––––––––––––––––
8. PENTODE/TRIODE SWITCH
When Pentode (full power) is selected the amp’s
output capability is the full 100-Watts. When Triode
mode (half power) is selected, the amp’s output is
halved to 50-Watts. Triode mode also produces a
smoother, less aggressive sound.
IMPORTANT OPERATIONAL NOTE: Whenever this
switch is used the amp must always be in Standby
mode.
9. MAINS INPUT SOCKET WITH MAINS FUSE.
Your amp is provided with a detachable mains
(power) lead, which is connected here. The specific
mains input voltage rating that your amplifier has
been manufactured for is indicated on the rear panel.
Before connecting for the first time, please ensure
that your amplifier is compatible with your electricity
supply. If you have any doubt, please seek advice
from a qualified technician. Your Marshall dealer will
help you in this respect.
456 7 9
8
1 & 2 3
Technical Specification
DSL100H
Power (RMS) 100W
Valves 4 x ECC83
4 x EL34
Channels 2
Weight (kg) 24.2
Dimensions (mm)
W 741
H 274
D 242

NotesNotes

Denbigh Road, Bletchley, Milton Keynes MK1 1DQ England
Tel : [phone] Fax : [phone]
www.marshallamps.com
Whilst the information contained herein is correct at the time of publication, due to our policy of constant improvement
and development, Marshall Amplification plc reserve the right to alter specifications without prior notice.
BOOK-91009 / 10 / 11